A range of
ceramic and stainless steel pressure sensors for viscous and
gaseous media is now available, which not only withstand frequent
wash downs and temperatures of up to 300°C, but are also
certified for use in explosive atmosphere (ATEX, Zone 0) environments.

The DMK 331P
is a ceramic pressure sensor with a flush stainless steel diaphragm,
ideal for viscous and gaseous media. Supplied by Impress Sensors
& Systems  a specialist manufacturer and distributor
of sensors, instrumentation and complete system packages, based
in Aldermaston, Berkshire  the sensor is targeted at any
process environment where viscous fluids are present, including
food & dairy manufacturing, paper & pulp, water &
waste treatment, chemicals and pharmaceuticals.

Due to its ceramic
housing, the DMK 331P shows excellent thermal characteristics
and therefore withstands frequent wash downs with chemicals and
water. Special versions of the sensor are also available with
a cooling element that enables the sensor to be used in temperatures
up to 300°C. Nominal pressure ranges are from 0 1 bar
up to 0 400 bar. Accuracy is ± 0.5% FSO (IEC 60770).
A variety of electrical and mechanical connections are available.

The DMP 331P
is a piezoresistive stainless steel pressure sensor that has
a flush pressure port made with inch, clamp and dairy pipe connections.
The sensor also benefits from small thermal effects and excellent
linearity. For higher process temperatures, an optional integrated
cooling element can be added that enables temperatures up to
300°C. The sensor is suitable for use in ATEX Zone 0 environments.
Nominal pressure ranges are from 0 100mbar up to 0 40
bar. Accuracy is 0.35%/0.25% FSO (IEC 60770).

Both sensors
come with silicon oil as standard, but other filling oils are
available, including food-compatible oils and Halocarbon. Other
types of pressure port and chemical seals are also available.
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